Ikhodi yephutha ye-P20EE OBD2 - Ukusebenza kahle kwe-SCR NOx catalyst ngaphansi komkhawulo, ibhange 1

I-DTC P20EE - Ishidi ledatha le-OBD-II

Ikhodi Yephutha ye-P20EE OBD2 - I-SCR NOx Catalyst Efficiency Ngezansi kwe-Threshold Bank 1

Isho ukuthini ikhodi ye-OBD2 - P20EE?

Le yi-generic Diagnostic Trouble Code (DTC) esebenza ezimotweni eziningi ze-OBD-II (1996 nezintsha). Lokhu kungafaka, kodwa kungagcini lapho, kwa-Audi, Buick, Chevrolet, Ford, GMC, Mercedes-Benz, Subaru, Toyota, Volkswagen, njll.. ukumiswa kokudluliswa. ...

Uma i-P20EE igcinwe emotweni yedizili efakwe i-OBD-II, kusho ukuthi imojuli yokulawula i-powertrain ithole ukuthi ukusebenza kahle kwe-catalyst kungaphansi komkhawulo webanga elithile lenjini. Le khodi ethile isebenza kusiguquli se-catalytic (noma i-NOx trap) yebhange lokuqala lezinjini. Ibhange lokuqala yiqembu lenjini eliqukethe isilinda inombolo eyodwa.

Yize izinjini zikadizili zesimanje ezihlanzekile zinezinzuzo eziningi kunezinjini zikaphethiloli (ikakhulukazi kumaloli ezentengiselwano), zivame nokukhipha amagesi athile ayingozi okuqothula kunezinye izinjini. Okugqame kakhulu kulezi zingcolisi ezonakalisayo ama-ion e-nitrogen oxide (NOx).

Izinhlelo ze-Exhaust Gas Recirculation (EGR) zisiza ngokwehlisa kakhulu ukukhishwa kwe-NOx, kepha izinjini eziningi ezinamandla zedizili azikwazi ukuhlangabezana nezindinganiso eziqinile ze-US federal (US) zokukhishwa kusetshenziswa uhlelo lwe-EGR kuphela. Ngalesi sizathu, izinhlelo ze-SCR zakhiwe.

Amasistimu we-SCR ajove i-Diesel Exhaust Fluid (DEF) emagesi aqediwe akhuphuka umfutho wokuguqula noma isicupho se-NOx. Ukwethulwa kwe-DEF kukhuphula izinga lokushisa kwamagesi okukhipha futhi kuvumela isakhi sokusebenza ukuthi sisebenze kahle. Lokhu kunweba impilo ye-catalyst futhi kunciphisa ukukhishwa kwe-NOx.

Izinzwa ze-Oxygen (O2), izinzwa ze-NOx kanye / noma izinzwa zokushisa zibekwa ngaphambi nangemva kwesikhuthazi sokuqapha ukushisa nokusebenza kahle kwaso. Uhlelo lonke lwe-SCS lulawulwa yi-PCM noma isilawuli esizimele esixhumana ne-PCM. Ngaphandle kwalokho, isilawuli sihlola izinzwa ze-O2, NOx nezinga lokushisa (kanye nokunye okufakwayo) ukuthola isikhathi esifanele somjovo we-DEF. Umjovo we-Precision DEF uyadingeka ukugcina ukushisa kwegesi okukhipha ngaphakathi kwemingcele eyamukelekayo nokuqinisekisa ukuhlunga okuhle kwe-NOx.

Uma i-PCM ithola ukuthi ukusebenza kahle kwe-catalyst akwenele kumingcele ephansi eyamukelekayo, ikhodi ye-P20EE izogcinwa futhi isibani sesikhombisi esingasebenzi kahle singakhanyisa.

Buyini ubunzima be-p20ee DTC?

Noma yimaphi amakhodi agciniwe ahlobene ne-SCR angabangela isistimu ye-SCR ukuthi ivaleke. Ikhodi ye-P20EE egciniwe kufanele ithathwe njengebucayi futhi kufanele ilungiswe ngokushesha okukhulu. Uma ikhodi ingalungiswa ngokushesha, ingalimaza isiguquli se-catalytic.

Yiziphi ezinye zezimpawu zekhodi?

Izimpawu zekhodi yenkinga ye-P20EE zingafaka:

• Intuthu emnyama eyeqile ephuma ekuqothulweni kwezimoto
• Ukunciphisa ukusebenza kwenjini
• Ukwehla kwamandla kaphethiloli
• Amanye amakhodi e-SCR agciniwe namakhodi okuphuma

Yiziphi ezinye zezimbangela ezijwayelekile zekhodi ye-P20EE?

Izizathu zale khodi zingabandakanya:

• Iphutha le-O2, i-NOx noma inzwa yokushisa
• Uhlelo lwe-SCR oluphukile
• Injector ye-SCR enamaphutha
• Uketshezi olungalungile noma olunganele lwe-DEF
• Isihlungi se-diesel particulate esibi (DPF)
• Ukuvuza kwe-exhaust
• Ukungcoliswa kwamafutha
• Isilawuli se-SCR esingalungile noma iphutha lohlelo
• Khipha ukuvuza phambi kwe-catalyst
• Ukufakwa kwezinto ezingezona ezasekuqaleni noma zokusebenza okuphezulu

Ikhodi Yephutha ye-P20EE

Ukuxilonga izimbangela zekhodi ye-OBD2 - P20EE

Ukuze uhlole i-DTC P20EE, uchwepheshe kufanele:

1. Skena amakhodi ku-ECM bese ubheka idatha yozimele yokufriza ukuze uthole amakhodi enkathazo.
2. Buyekeza imibiko yomlando wemoto yamakhodi ahlobene ne-NOx asethwe ngaphambilini.
3. Hlola intuthu ebonakalayo evela epayipini lokukhipha umoya futhi uhlole isistimu yokukhipha umoya ukuze uthole ukuvuza noma umonakalo.
4. Hlola ukufakwa kwepayipi ukuze uqiniseke ukuthi azikho izithiyo.
5. Hlola ingaphandle le-DPF noma i-SCR catalytic converter ukuze uthole ilangabi elicishiwe noma izimpawu zomonakalo ezisobala.
6. Hlola ishubhu yokugcwalisa ye-DEF ukuze uthole ukuvuza, ubuqotho be-cap, kanye nokulingana okufanele kwekhephu emugqeni woketshezi.
7. Hlola isimo se-DTC ku-ECM ukuze uqinisekise ukuthi isistimu ye-SCR ivuliwe.
8. Hlola amapharamitha enjini angukhiye ukuze uthole izimpawu zomonakalo noma ukusetshenziswa kukaphethiloli ngokweqile ngenxa yokungafihli komlilo womjovo noma ukwehluleka kwe-turbo boost.

Yiziphi izinyathelo zokuxazulula inkinga ze-P20EE?

Uma amanye amakhodi we-SCR noma wokukhipha ukuphuma noma amakhodi okushisa wegesi egcinwe, kufanele asuswe ngaphambi kokuzama ukuthola i-P20EE egciniwe.

Noma ikuphi ukuvuza okuphuma phambi kwesiguquli se-catalytic kufanele kulungiswe ngaphambi kokuzama ukuthola lolu hlobo lwekhodi.

Ukuthola ikhodi ye-P20EE kuzodinga ukufinyelela isithwebuli sokuxilonga, i-digital volt / ohmmeter (i-DVOM), i-infrared thermometer ene-laser pointer, nomthombo wolwazi lokuxilonga lohlelo lwakho oluthile lwe-SCR.

Sesha i-Technical Service Bulletin (TSB) efana nonyaka wokwenziwa, ukwenziwa nemodeli yemoto; kanye nokufuduswa kwenjini, amakhodi agciniwe, kanye nezimpawu ezitholakele kunganikeza imininingwane ewusizo yokuxilonga.

Qala ukuxilongwa ngokuhlola ngokubonakalayo uhlelo lwe-SCR injection, qeda izinzwa zokushisa kwegesi, izinzwa ze-NOx, nama-harnesses sensors harnesses kanye nezixhumi (02). Izintambo ezishisiwe noma ezilimele kanye / noma izixhumi kufanele zilungiswe noma zifakwe esikhundleni ngaphambi kokuqhubeka.

Bese uthola isixhumi sokuxilonga imoto bese uxhuma isithwebuli. Buyisa wonke amakhodi agciniwe kanye nedatha yozimele efriziwe bese ubhala lolu lwazi phansi ngaphambi kokusula amakhodi. Ngemuva kwalokho hlola ukushayela imoto ize i-PCM ingene kumodi yokulungela noma ikhodi isuliwe.

Uma i-PCM ingena kumodi elungele, ikhodi iphakathi futhi ingaba nzima kakhulu ukuxilonga ngalesi sikhathi. Izimo ezibe nomthelela ekuphikeleni kwekhodi zingadinga ukuba zimbi ngaphambi kokutholakala kokuxilongwa.

Uma ikhodi isetha kabusha ngokushesha, sesha umthombo wemininingwane yemoto yakho ukuthola imidwebo yebhlokhi yokuxilonga, izixhumi zokuxhuma, ubuso bokuxhuma, nezinqubo zokuhlolwa kwengxenye nezinto ezithile. Lolu lwazi luzodingeka ukuqedela izinyathelo ezilandelayo ekuxilongweni kwakho.

Buka ukugeleza kwedatha kwesithwebuli ukuqhathanisa ukufundwa kwezinzwa zesisi (ngaphambi nangemva kokuhlanza) i-O2, i-NOx namazinga okushisa phakathi kwamabhulokhi enjini. Uma kutholakala ukungahambelani, hlola izinzwa ezihambisanayo usebenzisa i-DVOM. Izinzwa ezingahlangabezani nezincazelo zomkhiqizi kufanele zithathwe njengezinephutha.

Uma zonke izinzwa namasekethe zisebenza kahle, sola ukuthi i-elemental catalytic ayisebenzi kahle noma ukuthi uhlelo lwe-SCR alusasebenzi.

• Qiniseka ukuthi idamu le-DEF ligcwele uketshezi olulungile futhi alingcolisiwe nganoma iyiphi indlela.

Amaphutha Okuxazulula Amaphutha Ajwayelekile we-P20EE

Okulandelayo ngamanye amaphutha ajwayelekile uchwepheshe angawenza lapho exilonga ikhodi ye-P20EE:

• Ukuhlola Idatha Yozimele Wokuqandisa Akukho ku-ECM
• Umbiko womlando wemoto awuhloliwe amakhodi ahlobene ne-SCR
• Ukulungisa inkinga eyodwa ngaphandle kokuqonda ngokugcwele ukuthi ihlobana kanjani nezinye izinkinga ohlelweni.

Yiziphi izilungiso ezingalungisa ikhodi P20ee?

Ngezansi izixazululo ezingalungisa le nkinga:

• Ukushintsha kwe-DEF fluid
• Ukushintshwa kwenzwa ye-NOx
• Ukushintsha ingxenye yesihlungi se-DPF
• Ukushintsha izintambo zokubopha ezihlotshaniswa nesistimu ye-SCR
• Ukushintsha I-SCR Catalyst Elimele noma Evaliwe
• Ukushintsha amatheminali agqwalile noma aqhekekile
• Ukushintsha ama-injection awonakele noma adubule kabi
• Ukufakwa kwenzwa yokuthuthukisa i-Turbocharger

Amakhodi ephutha e-OBD2 ahlobene:

I-P20EE ihlotshaniswa futhi ingase ihambisane namakhodi alandelayo:

• I-P2031 - Ukungasebenzi kahle kwe-SCR
• I-P2032 - Ukungasebenzi kahle kwe-valve yokushintsha yohlelo lwe-SCR
• I-P2137 - I-voltage ephansi kusekethe yenzwa ye-oxygen yangaphambili (HO2S), ibhange 1, inzwa 1
• I-P2138 - Inzwa Ye-oksijeni Eshisayo Yangaphambili (i-HO2S) I-Crcuit High Voltage Bank 1

isiphetho

Sengiphetha, ikhodi P20EE iyikhodi yenkinga yokuxilonga ehlobene ne-SCR NOx Catalyst Efficiency Under Threshold ukungasebenzi kahle. Lokhu kungabangelwa izinkinga eziningi, kodwa izinkinga ezivame kakhulu yizinkinga zesihlungi se-DPF kanye noketshezi lwe-DEF. Uchwepheshe kufanele ahlole lezi zimbangela ezingaba khona futhi ahlole imanuwali yesevisi ukuze ahlonze kahle futhi alungise le khodi.